Gas-compressor



' (No Model.)

B. F. SILLIMAN.

GAS COMPRESSOR. '110,527,081. Patente-d Oct. 9,11894.

g., l 1, un 'v Pq v movable heads d d and e.

be secured in any suitable manner; also the-r l UNITED STATES- PA'TENT vtirarse@V BENJAMIN F. SILLIMAN, OF CLEVELAND, OHIO.

GAS-COMPRESSOR.

SPECIFICATION forming part of Letters Patent N0. 527,081, dated October 9,1894.

Application filed December 12, 1893. Serial No- 493,513.l (No model I To all whom t may concern: e

Be it known that I, BENJAMIN F. SILLIMAN, a citizen of the United States, and a resident of Cleveland, in the county of Cuyahoga and State of-Ohio, have invented a new and Improved Gas-Oompressor, of which the following is a specification. i

My invention relates to improvements in twin cylinderl gas compressors, in which the cylinders` are arranged in alignment and havingstraight line coupled pistons applied in connection therewith.

The objects of my improvement. are chiey simplicity in construction, to provide for a proper and durable guidance ofthe operating parts, which in turn admit of an easyand thorough manner oflubrication while the lubricant also serves as a medium for attaining the gas under seal.AAV

That theinvention may-be fully understoodk i and seen, reference will be had to the following speci tication and the accompanying draw ings, in which- Y Figure l illustrates a part horizontal section-v Like letters of reference denote like parts" in the drawings and specification. Y

The compressor above referred to consists substantially of the following parts, to wit: the combined structure ofthe cylinders A, A and thecasing partB; the pistons C C', link D, shaft E with disk or head E and wrist pin F.

The cylinders A A-- extend in oppositedirection and alignment from out the casing B, that is, said cylinders are arranged in open relation with the casing B, which comprises the supply chamber d, stuffing box b and a suitable bearing c for the head of the shaft E. The extremities or terminals of said cylinders and casing are anged and provided with re- Said heads may to said heads d d are the eduction valve re-V ceptaclesff with branch outlets g g adapted for connect-ing pipes therewith. See Figs. 1, 2 vandA 3. serve as eduction valves h h and cap screws and also determining the liftof said-val`ves.

. By means of the base, anges t t" the cylinders or compressor proper canbe secured to any suitable foundation, frame or wall plates.'

lt is essential however that the casing with stuffing box be retained in perpendicular po- :sition for reasons hereinafter set forth. n The pistons O C are coupled or united by ,Fatfords a similar connection of the opposite lend of said link and the disk E of theshaft E.

The disk E isguided yin the circular bearing c, and for the shaft is provided the stu-tf-v ing box b. The shaft may either be directly a part of the motor, or may indirectly 'be driven by motive power. At m provision is made for attachment of an oil cup or similar apparatus vfor conveying suitable lubricants into the casing B, so that not only all the moving parts maybe'immersed or surrounded by lubricating substancey or fluid, but also attaining the formation of a sealing medium, between and for'the supply of gas in the chamber a and the stuffing box b. p

'ln the drawings the head e is adapted for connectionof the supply pipe. (See inlet n.) Said inlet however may be arranged in the side of the casing B (above the oil inlet) if so desired.

Depending upon the nature of the gas to be compressed, more or less lubricating `iiuid or substance may be injected into the casing B. If this compressor is used for compressing anhydrous ammonia, (which agent is used for refrigeation and the artificial production of ice,) then but a low level of lubricant is needed, owing to the cold state in which said gas enters and its very lubricating nature. To establish a seal for the gas to preventcoming In preference balls are selected to jj are employed for closing said receptacles' in contact with the packing in the stuffing box is the only object in that instance. The disk IOC thereby attained, and also a deposit of lubricant is rendered available for the shaft and stuffing boX.

The rotation of the shaft E results in the reciprocat-ion of the pistons C C by the means above stated. The withdrawal of either of the pistons toward the casing part permits the gas to enter one or the other of the cylinders, and it is while gas enters one cylinder, that the gas in the other cylinder (previously charged) becomes compressed i to be so discharged th rough the valves h h above referred to. In Figs. l and 2 the pistons are shown in mid position, and be it supposed that the shaft revolves in the direction as indicated by the arrow Fig. l, then it is the piston C', which is in the act of compressing the gas, which had entered partly during the previous stroke in opposite direction and at the beginning of the stroke now assumed. Compression is progressing until the pressure in the cylinder A exceeds that in the discharge pipes. The valve h will then open and remainso until the gas is completely expelled; the pistons traveling in close proximity to the heads 0l CZ to assure this. i Before, while and after interchange of stroke takes place the piston C is in a position past the terminal p of the cavity p. See Figs. 2 and et. During that interval the cylinder A becomes charged with gas from the chamber ct to be compressed on the return of the piston C the moment the latter has passed the line ja.

From the foregoing it can readily be seen, that either rotary or vibrating motion imparted to the shaft E results in the reciprocation of the pistons C C', but in either instance the pistons must be forced close up to the heads to assure complete displacement of the compressed gas.

To leave space for an abundant supply of gas within the chamber d, and also to provide for a perfect seal of lubricants to guard against leaking of gas through the stufting box it is essential that the cylinders should be so mounted as to enable the sealing medium even when at 10W level to completely maintain the head E in immersed condition. It is thus proper that perpendicular position be given to the shaft E `for operation of the cylinders above described.

What I claim, and desire to secure by Letters Patent, is-

l. In a gas compressor having the cylinders arranged in alignment and in open relation with a casing constituting a supply chamber for both of said cylinders, the combination of the pistons C C united by a top bar and a shaft provided with a disk and link in operative connection with said pistons below said bar, the said disk being guided in a recess in the bottom of said casing, substantially as shown and for the purpose described.

2. [n combination with the cylinders A A', casing B, pistons C C and shaft E with disk E and the link D in operative connection with said pistons and said disk, the casingB provided with a stuffing box for said shaft, directly above which is a recessed bearing for said disk, substantially as shown and for the purpose described.

3. In agas compressor of the class described, the disk of the operating shaft perforated and guided in a recess of the casing part thereof substantially as shown and for the purpose described.

4. In agas compressor of the class described, the casing thereof having, in the interior upper side, recesses p for admission of gas, and a circular recess above its stuting box in com bination with a vertical operating shaft and disk guided in said box and recess, a link and pistons, united by a top bar, alternately establishing open relation of said recesses p and the compression cylinders, all constructed and arranged substantially as and for the purpose described.

BENJAMIN F. SILLIMAN. Vtitnesses:`

BERNHARD F. EIBLER, GEORGE A. BoEsEL. 

